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Pin outs and Connector
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USB Layout Diagram
Type A USB Connector
Type B USB Connector
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RS-232 Pin Assignment
The pin assignment scheme for a 9-pin male connector is given below.
PIN 1 : DCD PIN 2 : RXD PIN 3 : TXD PIN 4 : DTR
PIN 5 : GND PIN 6 : DSR PIN 7 : RTS PIN 8 : CTS
PIN 9 : X
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RS-232 Wiring Diagram